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ADAS3022 Arkusz danych(PDF) 1 Page - Analog Devices |
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ADAS3022 Arkusz danych(HTML) 1 Page - Analog Devices |
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1 / 40 page  16-Bit, 1 MSPS, 8-Channel Data Acquisition System Data Sheet ADAS3022 Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2012–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Ease of use—16-bit, 1 MSPS complete data acquisition system High impedance, 8-channel input: >500 MΩ Differential input voltage range: ±24.576 V maximum High input common-mode rejection: >100 dB User-programmable input ranges Channel sequencer with individual channel gains On-chip 4.096 V reference and buffer Auxiliary input—direct interface to PulSAR ADC inputs No latency or pipeline delay (SAR architecture) Serial 4-wire, 1.8 V to 5 V SPI-/SPORT-compatible interface LFCSP package (6 mm × 6 mm) −40°C to +85°C industrial temperature range APPLICATIONS Multichannel data acquisition and system monitoring Process control Power line monitoring Automated test equipment Instrumentation GENERAL DESCRIPTION The ADAS3022 is a complete 16-bit, 1 MSPS, successive approxi- mation–based analog-to-digital data acquisition system, which is manufactured on Analog Devices, Inc., proprietary iCMOS® high voltage industrial process technology. The device integrates an 8-channel, low leakage multiplexer; a high impedance program- mable gain instrumentation amplifier (PGIA) stage with high common-mode rejection; a precision, low drift 4.096 V reference and buffer; and a 16-bit charge redistribution analog-to-digital converter (ADC) with successive approximation register (SAR) architecture. The ADAS3022 can resolve eight single-ended inputs or four fully differential inputs up to ±24.576 V when using ±15 V supplies. In addition, the device can accept the commonly used bipolar differential, bipolar single-ended, pseudo bipolar, or pseudo unipolar input signals, as shown in Table 1, thus enabling the use of almost any direct sensor interface. The ADAS3022 simplifies design challenges by eliminating signal buffering, level shifting, amplification/attenuation, common-mode rejection, settling time, and any other analog signal conditioning challenge while allowing a smaller form factor, faster time to market, and lower cost. Table 1. Typical Input Range Selection Signal Input Range, VIN (V) Differential ±1 V ±1.28 V ±2.5 V ±2.56 V ±5 V ±10.24 V ±10 V ±20.48 V Single Ended1 0 V to 1 V ±0.64 V 0 V to 2.5 V ±1.28 V 0 V to 5 V ±2.56 V 0 V to 10 V ±5.12 V 1 See Figure 59 and Figure 60 in the Analog Inputs section for more information. FUNCTIONAL BLOCK DIAGRAM IN4 IN5 IN3 IN2 BUF IN6 IN7 IN1 IN0 IN0/IN1 PAIR DIFF TO DIFF COM IN2/IN3 IN4/IN5 IN6/IN7 PulSAR ADC LOGIC/ INTERFACE REFIN REF REFx CNV RESET PD SCK DIN SDO VSSH VDDH AGND VIO DVDD AVDD DGND CS COM AUX+ AUX– BUSY ADAS3022 MUX TEMP SENSOR PGIA Figure 1. |
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